Ask Ubuntu General Room

ƎpᴉʇʎXD

21:00

Hats off

Serg

Phew, posted the script, hope OP likes it

Nathan Osman

Is there a way to open a file for reading and writing and create it if it does not exist AND figure out which of those two things happened?

Basically I want the behavior:
- If the file exists, open for reading
- If not, create it and open for writing
...and I want to know which of those happened

Or something similar.

Serg

@NathanOsman in python ?

Nathan Osman

21:15

No, in Go unfortunately.

Although I can probably adapt something written in Python.

Maybe.

The problem is that if I do a simple if{}, I end up with a race condition.

Although I may just have to accept that.

Serg

@NathanOsman is there a way to catch exception in go ? you could catch exception if file doesn't exist and open it for writing as you want

Nathan Osman

That creates a race condition.

Serg

:/

Nathan Osman

Something else could happen between the error for the file not existing and opening it for writing.

I need an atomic operation :D

But I'm not sure one exists >.<

POSIX really dropped the ball on this one.

Serg

well, i dont quite know how to help you then . . .

Nathan Osman

21:26

I guess I'm stuck with it.

Serg

Any bash experts want to test my comment and claim ? I have a user in comments who believes i am misinterpreting OPs follow-up question

ƎpᴉʇʎXD

BBL

Serg

sigh . . . 8 AM class. Yay or ney ? I think it's the only one available this semester

Zacharee1

@AndroidDev where is this question

Serg

It's not required for me though, Data Communications. TCP/IP and networking stuff

aw,man, the choices

Programming Pragmatics class . . . .i wonder if I should deal with this one or not

Byte Commander

21:40

important life choices suck...

not that this one sounds to be too important for your life, but it seems to suck as well...

Serg

I wish i could be done with college already. I mean, I am just worn out by the whole BS of it all

just gimme my diploma and let me go, i've suffered enough

Byte Commander

You think having a job afterwards will be better?

Serg

Nope , but at least I will be earning money instead of spending them on classes

Byte Commander

That's an argument.

Fortunately my studies will be paid by the company I'm working at.

And I'll even get a salary.

Serg

Lucky you . . . .

Byte Commander

21:46

I'll have no semester holidays though, only those standard 30 days per year of a regular job.

CodeX

Question : 6 watt power consumption for wireless is normal ?

edwinksl

22:13

i am surprised this question has survived this long lol askubuntu.com/questions/677889/…, VTC please

Mateo

22:30

lol, that confusing question about that dev board got self deleted

he was basically looking for a pre-installed/made image to put on his sd card... shouldn't have been too hard

yikes he wrote his question in his bio...

yo mod's: askubuntu.com/users/565427/monkeyman-stones - if he can stop blaming people who are trying to help his question might not have been so complicated, was about to edit out the extra stuff before he deleted, and look for an image - as probably what he needs is a image - or someone to press the buttons for him... can't believe he is trying to blame us for saying what is required to install...

he might be past the point of no return, but seriously needs to leave out the personal stuff.

edwinksl

@Mateo this question? askubuntu.com/questions/809056/…

Serg

python's print bricks with broken pipe

that's a baaaaad thingy

they should fix that

Mateo

er... he reposted?

edwinksl

no idea, i didn't see the deleted one

Serg

22:46

wowowowo

they fixed it in python3 ???

nice

CodeX

why do we talk to ourselves here xD

Mateo

it is fun

@Mateo hi

@Mateo Oh hello! nice to see you here!

@CodeX ;p

Serg

i kinda like that enumeration script. i may keep it for my own usage in future

Serg

23:12

wooo markimoo's livestream is tooday

Ask Ubuntu Meta

0

Q: logout from xubuntu gets stuck in Ubuntu 16.04.1 LTS

I use xubuntu and run it inside vbox. Previously I had version 15 and everything was working fine, after I updated to "Ubuntu 16.04.1 LTS" I noticed multiple issues. First is minor, when I RDP to it (using virtual box's remote display, I see two mouse cursors). It might be somehow vbox realted, b...

CodeX

@Mateo hello xD

Serg

@ParanoidPanda so essentially what you're asking here askubuntu.com/q/809054/295286 is application multi open. click a, click b, exit menu, launch all apps. Right ?

user136984

@Serg: Yes

Serg

@ParanoidPanda that probably isn't possible , and i doubt there are extension for this sort of thing. I could however make a custom script that will allow you select bunch of apps from list and launch them

CodeX

23:24

one of the main reason people don't use gnome

user136984

@Serg: I don't know... So you don't think there's even a way to alter when it exist out of the menu? Because I'm sure that that code can be changed, probably made easier by the extensions API or whatever they use.

user136984

@CodeX: I'm pretty sure it's the same in Unity. Is it not? I don't think that what I am requesting is incredibly common.

user136984

You open the dash, you click an app, the dash closes. I doubt that you can make it stay open. Same here.

Serg

yeah, i don't think it's possible

user136984

Maybe I'll file a request upstream on the matter then.

user136984

23:25

:)

Serg

Actually , you could ask @JacobVlijm to modify his source code for dash_the_second script ( or whatever it was called ) to add multilaunch functionality.

user136984

Ooh... That would be nice! :)

CodeX

you are asking multiple window for same application ? I use kubuntu for that

user136984

@CodeX: No, I want to open multiple applications before the Activities Overview closes.

user136984

If you click an application it closes and takes you to the application, which is what most people want. But I need something different sometimes.

CodeX

23:30

in that case unity launcher is not better ? no closing in that

Serg

actually , it's the same

well , unity dash i mean

user136984

@CodeX: It's exactly the same in Unity.

CodeX

dash yes but not the launcher

Serg

@ParanoidPanda actually there are extensions for keeping launcher on screen. howabout that ?

user136984

Well, I'm not talking about the launcher.

Serg

23:31

you can do the same as unity launcher

user136984

@CodeX: I have a launcher of my own with the same capabilities. The launcher is not the problem.

user136984

@Serg: I like the launcher hidden...

user136984

Plus the majority of the applications I open aren't from the launcher, that would take up too much room then.

Serg

it will be very difficult and probably impossible to match your requirements for that question

CodeX

yeah .. I cant imagine AO or Dash or application menu not closing after launching the application ..defeats its purpose if it does that

Serg

23:36

@ParanoidPanda actually, now that i think of it , you can do this in nautilus

open /usr/share/applications/ folder

and do multi-select then hit enter

CodeX

haha

Serg

my firefox is lagging very very bad right now, so look into my answers , i have a post about multi-select in there somewhere

user136984

@CodeX: Well, imagine you do a search in your AO/Dash and you need to open the 10 PDFs which show, which would you prefer, to have to keep reopening the AO/Dash, redoing the search, waiting for the results and clicking the next item to have it slowly launch before you can go into the AO/Dash again without it getting really slow, or would you prefer to just be able to open multiple items at the same time before exiting? I think I would prefer the latter.

user136984

It wouldn't be all the time, not even the default click, but just something like shift click to do it.

Serg

personally, i wouldn't use activities overview or dash for that. This is power-user requirement, and that's command-line job

CodeX

23:43

@ParanoidPanda yeah in that case I would prefer opening all .. but I would rather open the folder (Documents or Home) and use nautilus to search pdf files ..

user136984

Yeah, well, it's not always that easy depending on the kind of item you are dealing with, you could even be dealing with multiple items (e.g.: files and applications), and they could potentially be located anywhere in your system.

user136984

Anyway, it's getting late and I'm exhausted, goodnight! :)

CodeX

Good night

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